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Finding the Fourth Proportional to 63,999.60, 95,999.40 and 40,642.80

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Solution

The fourth proportional to 63,999.60, 95,999.40 and 40,642.80 is: 60,964.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,999.60 : 95,999.40 = 40,642.80 : x
  2. Step 2: Convert to fraction form
    63,999.60/95,999.40 = 40,642.80/x
  3. Step 3: Cross multiply
    63,999.60x = 95,999.40 × 40,642.80
  4. Step 4: Simplify right side
    63,999.60x = 3,901,684,414.32
  5. Step 5: Solve for x
    x = 3,901,684,414.32/63,999.60
  6. Step 6: Final answer
    x = 60,964.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.